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Jun 11, 2023 · It is well known that the arterial PaO 2 in mm Hg on room air decreases with age. A crucial point to remember is that an ABG saturation is about 100% when the ABG partial pressure of oxygen is approximately 97 mm Hg or more (depends a little on the oxygen dissociation curve).
- Gene R. Pesola, Abdulghani Sankari
- 2023/06/11
Nov 23, 2022 · Oxygen is tightly regulated within the body because hypoxemia can lead to many acute adverse effects on individual organ systems. These include the brain, heart, and kidneys. Oxygen saturation measures how much hemoglobin is bound to oxygen compared to how much hemoglobin remains unbound.
- Brant B. Hafen, Sandeep Sharma
- 2022/11/23
High concentrations of oxygen should be avoided in patients with stroke, unless required to maintain normal oxygen saturation. Aim at an oxygen saturation of 94–98% or 88–92% if the patient is at risk of hypercapnic respiratory failure (grade D). Good practice points regarding stroke management.
- B R O'Driscoll, L S Howard, J Earis, V Mak
- 2017
For patients at sea level and breathing room air, FIO2 = 0.21, and the (A-a)DO2 can be simplified. Estimations of normal (A-a)DO2 values as < (2.5 + [FIO2 × age in years]) or as less than the absolute value of the FIO2 (eg, < 21 while breathing room air; < 30 on 30% FIO2) correct for these effects.
Nov 3, 2020 · a multicenter, prospective, randomized, controlled trial of 441 patients with STEMI found that provision of oxygen (8 L/min) is associated with greater infarct size (a secondary outcome), when compared with room air in patients without hypoxaemia.
According to Stemp and Ramsay , a fall in arterial oxygen saturation on pulse oximetry in patients breathing room air is indicative of alveolar hypoventilation or possible airway obstruction. Rapid detection of this phenomenon in the PACU thus enables early intervention.
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Jan 9, 2020 · The respiratory rate is one of the six vital signs (Box 1). Evidence suggests that, of all the vital signs, change in respiratory rate is an early sign of deterioration in a patient and failing to recognise such a change can result in poor outcomes (Cretikos et al, 2008).
